I cut and burned for about four years. For me it was quite simple to stop, I just found what was causing me to want to harm myself, like a motive. Once I knew I just didnt have a desire to do it anymore. But I guess these urges can really come back. I am getting back into therapy next week, its been about nine months since I have had any kind of therapy. I have a couple of good friends, but they get angry with me when I do this to myself. So they're not always available.
Im sorry to hear about your home life. Hang in there.